Recent Submissions

  • Shape Segmentation and Matching from Noisy Point Clouds 

    Dey, Tamal K.; Giesen, Joachim; Goswami, Samrat (The Eurographics Association, 2004)
    We present the implementation results of a shape segmentation technique and an associated shape matching method whose input is a point sample from the shape. The sample is allowed to be noisy in the sense that they may ...
  • Finite Elements on Point Based Surfaces 

    Clarenz, U.; Rumpf, M.; Telea, A. (The Eurographics Association, 2004)
    framework efficiently and effectively brings well-known PDE-based processing techniques to the field of point-based surfaces. Our method is based on the construction of local tangent planes and a local Delaunay triangulation ...
  • A Barcode Shape Descriptor for Curve Point Cloud Data 

    Collins, Anne; Zomorodian, Afra; Carlsson, Gunnar; Guibas, Leonidas (The Eurographics Association, 2004)
    In this paper, we present a complete computational pipeline for extracting a compact shape descriptor for curve point cloud data. Our shape descriptor, called a barcode, is based on a blend of techniques from differential ...
  • Meshing Point Clouds Using Spherical Parameterization 

    Zwicker, M.; Gotsman, C. (The Eurographics Association, 2004)
    We present a simple method for meshing a 3D point cloud to a manifold genus-0 mesh. Our approach is based on recent methods for spherical embedding of planar graphs, where we use instead a k-nearest neighborhood graph of ...
  • Topological estimation using witness complexes 

    Silva, Vin de; Carlsson, Gunnar (The Eurographics Association, 2004)
    This paper tackles the problem of computing topological invariants of geometric objects in a robust manner, using only point cloud data sampled from the object. It is now widely recognised that this kind of topological ...
  • On Normals and Projection Operators for Surfaces Defined by Point Sets 

    Alexa, Marc; Adamson, Anders (The Eurographics Association, 2004)
    Levin s MLS projection operator allows defining a surface from a set of points and represents a versatile procedure to generate points on this surface. Practical problems of MLS surfaces are a complicated non-linear ...
  • Bounds on the k-Neighborhood for Locally Uniformly Sampled Surfaces 

    Andersson, Mattias; Giesen, Joachim; Pauly, Mark; Speckmann, Bettina (The Eurographics Association, 2004)
    Given a locally uniform sample set P of a smooth surface S. We derive upper and lower bounds on the number k of nearest neighbors of a sample point p that have to be chosen from P such that this neighborhood contains all ...
  • Points Reloaded: Point-Based Rendering Revisited 

    Sainz, Miguel; Pajarola, Renato; Lario, Roberto (The Eurographics Association, 2004)
    The increasing popularity of points as rendering primitives has led to a variety of different rendering algorithms, and in particular the different implementations compare like apples to oranges. In this paper we revisit ...
  • Proximity Graphs for Defining Surfaces over Point Clouds 

    Klein, Jan; Zachmann, Gabriel (The Eurographics Association, 2004)
    We present a new definition of an implicit surface over a noisy point cloud. It can be evaluated very fast, but, unlike other definitions based on the moving least squares approach, it does not suffer from artifacts. In ...
  • The Domain of a Point Set Surface 

    Amenta, Nina; Kil, Yong J. (The Eurographics Association, 2004)
    It is useful to be able to define a two-dimensional point-set surface determined by a point cloud. One popular definition is Levin's MLS surface. This surface is defined on a domain which is a three-dimensional subset of ...
  • Layered Point Clouds 

    Gobbetti, Enrico; Marton, Fabio (The Eurographics Association, 2004)
    We present a simple point-based multiresolution structure for interactive visualization of very large point sampled models on consumer graphics platforms. The structure is based on a hierarchy of precomputed object-space ...
  • Progressive Compression of Point-Sampled Models 

    Waschbüsch, M.; Gross, M.; Eberhard, F.; Lamboray, E.; Würmlin, S. (The Eurographics Association, 2004)
    decomposition of the point set and thus easily allows for progressive decoding. Our method is generic in the sense that it can handle arbitrary point attributes using attribute-specific coding operations. Furthermore, no ...
  • Compression of Point-Based 3D Models by Shape-Adaptive Wavelet Coding of Multi-Height Fields 

    Ochotta, Tilo; Saupe, Dietmar (The Eurographics Association, 2004)
    In order to efficiently archive and transmit large 3D models, lossy and lossless compression methods are needed. We propose a compression scheme for coordinate data of point-based 3D models of surfaces. A point-based model ...
  • Uncertainty and Variability in Point Cloud Surface Data 

    Pauly, Mark; Mitra, Niloy J.; Guibas, Leonidas J. (The Eurographics Association, 2004)
    We present a framework for analyzing shape uncertainty and variability in point-sampled geometry. Our representation is mainly targeted towards discrete surface data stemming from 3D acquisition devices, where a finite ...
  • Post-processing of Scanned 3D Surface Data 

    Weyrich, T.; Pauly, M.; Keiser, R.; Heinzle, S.; Scandella, S.; Gross, M. (The Eurographics Association, 2004)
    3D shape acquisition has become a major tool for creating digital 3D surface data in a variety of application elds. Despite the steady increase in accuracy, most available scanning techniques cause severe scanning artifacts ...
  • Interactive 3D Painting on Point-Sampled Objects 

    Adams, Bart; Wicke, Martin; Dutré, Philip; Gross, Markus; Pauly, Mark; Teschner, Matthias (The Eurographics Association, 2004)
    We present a novel painting system for 3D objects. In order to overcome parameterization problems of existing applications, we propose a unified sample-based approach to represent geometry and appearance of the 3D object ...
  • Interactive Point-Based Modeling from Dense Color and Sparse Depth 

    Popescu, Voicu; Sacks, Elisha; Bahmutov, Gleb (The Eurographics Association, 2004)
    We are developing a system for interactive modeling of real world scenes. The acquisition device consists of a video camera enhanced with an attached laser system. As the operator sweeps the scene, the device acquires dense ...
  • Real-Time Point Cloud Refinement 

    Guennebaud, G.; Barthe, L.; Paulin, M. (The Eurographics Association, 2004)
    Splatting-based rendering techniques are currently the best choice for efficient high quality rendering of pointbased geometries. However, such techniques are not suitable for large magnification, especially when the object ...
  • Stratified Point Sampling of 3D Models 

    Nehab, Diego; Shilane, Philip (The Eurographics Association, 2004)
    Point sampling is an important intermediate step for a variety of computer graphics applications, and specialized sampling strategies have been developed to satisfy the requirements of each problem. In this article, we ...
  • Phong Splatting 

    Botsch, Mario; Spernat, Michael; Kobbelt, Leif (The Eurographics Association, 2004)
    Surface splatting has developed into a valuable alternative to triangle meshes when it comes to rendering of highly detailed massive datasets. However, even highly accurate splat approximations of the given geometry may ...

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